/Engine/Source/Editor/Kismet/Public/ISCSEditorCustomization.h
Handle drag in the viewport
true if the operation was handled.
bool HandleViewportDrag ( const [USceneComponent](API\Runtime\Engine\Components\USceneComponent) * InSceneComponent, class [USceneComponent](API\Runtime\Engine\Components\USceneComponent) * InComponentTemplate, const FVector & InDeltaTranslation, const FRotator & InDeltaRotation, const FVector & InDeltaScale, const FVector & InPivot )